What does the condenser do?
Displaces heat
What are the basic steps to the refrigeration cycle?
Starts in compressor, goes to the condenser, then to the metering device, to the evaporator and back through the cycle
What stores excess refrigerant?
Accumulator
Where does superheat occur?
Evaporator
Where does subcooling occur?
Condenser
What three lines are on a refrigeration unit?
Discharge, Suction, and Liquid
What does the compressor do?
Pumps refrigerant through the system
What is a CFC?
Type of refrigerant containing Carbon, Fluorine, and Chlorine
Why do we not braze water line?
Brazing rods can contain lead
What is the two finger method?
What is an HCFC?
A type of refrigerant that is made of Hydrogen, Carbon, Fluorine, and Chlorine
What does a run capacitor do?
What does a start capacitor do?
Sends a jolt of amperage to provide the amperage needed to start a motor
What does CSR stand for?
Common, start, and run
What is continuity?
uninterrupted connection
List an example of a conductor
gold/silver/brass...
List an example of an insulator
Wood, Rubber, Plastic...
What is the purpose of a relay?
controls an appliance below 20 amps
What happens if liquid gets in the compressor?
it slugs the compressor
What does a contactor do?
controls appliances 20 amps and higher
What are the three components of a motor?
Stator, rotary, and windings
What is a solenoid?
A magnetic valve
What is the purpose of a bimetal disc?
Safety device that opens a circuit when there is too much pressure/heat
What tool do you use to test for gas flow?
Manometer
What pressure refrigerant is r-134a?
Low-medium